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Finding the Fourth Proportional to 7,998.72, 11,994.12 and 2,450.72

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Solution

The fourth proportional to 7,998.72, 11,994.12 and 2,450.72 is: 3,674.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.72 : 11,994.12 = 2,450.72 : x
  2. Step 2: Convert to fraction form
    7,998.72/11,994.12 = 2,450.72/x
  3. Step 3: Cross multiply
    7,998.72x = 11,994.12 × 2,450.72
  4. Step 4: Simplify right side
    7,998.72x = 29,394,259.75
  5. Step 5: Solve for x
    x = 29,394,259.75/7,998.72
  6. Step 6: Final answer
    x = 3,674.87

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Half scale
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Double scale
Find fourth proportional to 7,999.72, 11,995.62 and 2,451.72
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.